[meta] Update submodules
[meta] Vagrant

Initial scratch work for being able to test using Vagrant.
[meta] Don't check host keys when SSHing to Vagrant
[vim] Ignore .scratch and .VimballRecord files
[meta] Only do SSH conf if local, handle Debian
[tmux] Only source ~/.tmux.conf.local if it exists
[meta] Only stow OS X stuff if on OS X
[vim] Add incsearch.vim plugin
[alfred] Add custom search for Google Inbox
[vim] Set autoread
Merge branch 'vagrant'